Bug 729132 - Correctly handle the case that we try to draw a texture with x = width. r=mattwoodrow

--HG--
extra : rebase_source : 02d84bf78ef60d84dfb96832cd39267f5d99aa38

gfx/gl/GLContext.cpp

@@ -2510,9 +2510,9 @@ GLContext::DecomposeIntoNoRepeatTriangles(const nsIntRect& aTexCoordRect,
 {
     // normalize this
     nsIntRect tcr(aTexCoordRect);
-    while (tcr.x > aTexSize.width)
+    while (tcr.x >= aTexSize.width)
         tcr.x -= aTexSize.width;
-    while (tcr.y > aTexSize.height)
+    while (tcr.y >= aTexSize.height)
         tcr.y -= aTexSize.height;
 
     // Compute top left and bottom right tex coordinates